Suction force pump



April 3, 1928.

1,665,082 A. BOHNENBLUST SUCTION FORCE PUMPI Filed Nov. 14 192.7

2 Sheets-Sheet l Arb/)Zo Bowan IIJ? April 3, 1928.

A. BoHNENBLusT SUCTION FORCE PUMP Patented Apr. 3, 1928.

retailer .aituotn` BQHNENBLUST, or RILEY, Kansas.

` sjUC'TIoN FORCE PUMP.

Application filed ovember 14, 1927. Serial N0. 233,214.

This invention aims to prov-ide a pump which will wear stuffingboxes to a. min-im-um extent,v the pump always being ade-` quately primed, leakage past the pistons ben ing taken care of, and a compa-ctv and effective structure being the result.'V

It is within the province' of the disclosure to improve generally and to enhance the util-ity of' devices of thattype to which the invention appertains. i

lith the above andf'other obj-ects inr View which will appear as the' description proceed's, the invention resides in the combf nation and arrangement of parts and in the details of construction hereinafter ldescribed and claimed,- it being understood that changes in the precise embodiment of the invention herein-disclosed maybe made within the scope of what is claimed, without departing` from thespiritof the invention.

ln; the drawings v Figure 1 shows in end elevation, a device constructed in accordance with the invention;

Figure 2 is a vertical section onthe line 2-2 of Figure 3; and

Figure 3 is a longitudinal section on the line 3-3 of Figure 1.

The pump forming the subject matter of this application includes a frame made up of a base 1 and a casing 2 superposed on and connected to the base. alined cylinders 3, spaced nected by an enlarged compartment 4f. An inlet manifold 5 extends lengthwise of the cylinders 3 and along the compartment 4. The manifold 5 has an inlet G. An outlet nia-i'iifold 7 extends lengthwise of the inlet manifold 5. The manifold 7 has an outlet 8. The ends of the outlet manifold 7 are separated from the ends of the inlet manifold 5 by -shaped chambers 9 comn'umicating with ports 10, the ports 10 being in communication with the cylinders 3 at points closely adjacent to the outer ends of the cylinders. First valves 11, which are slidably mounted, control the passage of liquid from the inlet manifold 5 to the chambers 9. Slidably mounted second valves 12 control the flow of liquid from the chambers 9 to the outlet manifold 7. The valves 11 close toward the inlet manifold 5, and the valves 12 close toward the chambers 9'. The usual air chambers 14 are mounted on the casing 1 and communi- The casing 2 has apart, and con-V cate with the outlet manifold" z at points near to the ends of the outlet manifold;

Pistons 15 are mounted for Vreciprocation in the cylinders 3 and are united by a connecting rod One lend ofV a link- 17 vis pivotally connected at 18 with the rod 1P, and the opposite end of the link 17 is pivotally connected at 19w'i'th a radius arm 2,0 located in the compartment fland secured to a shaft 21 extended across the compartment a and mounted to rock in stuffing bones22 carried by the sides of the casing 2'. Crank arms 23am securedl to the' shaft 2-1 and are locatedv externally of the ycasing 2. The crank 'arms'28 are pivoted at 25 to pit-men 2a which, in their turn, are pivotally connected at 26 to gear wheels 27, eccentrifcally of the said gear wheels, the gear wheelsV beh ing supported for rotation on the casing 2 at one ond thereof. vGear wheelsV 27 mesh with pinions 28- on a transverse shaft29 journalfed for rotation inV bearings 30l mounted on one end ofthe base 1.' Rotation may be imparted to the shaft' 29- in any sui-table way, for instance, by means ofil a pulley 31 on the shaft. n

The numeral 82 marks a U-shaped conduit including a long arm and a short arm. TheY long arm of the conduit 82 is mounted in the wall that exists between the comparti` ment t and the inlet manifold 5. The conduit 32, therefore, establishes communication between the compartment l andthe inta-lie manifold 5. In the short arm of the conduit 32 there is a seat 33. A valve 34 is adapted to cooperate with the seat 33, the valve being carried by a stem 35 that is slidable in a bracket 37 mounted on the wall between the compartment d and the inlet manifold. The stem B5 carries a floa t 3G located Within the short arm of the intake conduit 32. y

In practical operation, whenrotation imparted to the shaft 29 by means of the pulley 81 or its equivalent, the pinions 2S will rotate the gear wheels 27, and from the gearwheels, motion is transmitted througli the instrumentality of the pitmen 24 to the crank arms 23 and to the shaft 2l, a rocking movement being imparted to the shaft. Owing to thefaot that the parts 2827 24-23 are duplicated at each side of the pump, true and even rocking motion is imparted to the shaft 21, and little if any diiiculty is experienced in keeping up the stuifing boxes 22, the stuiiing boxes opera-ting effectively for long periods, Without .much

effort, and Without renewal.

vWhen the shaft 2l is rocked :is aforesaid,

swinging movement is imparted to the radius f arm 20, andthe linl 17 imparts reciprocav tion to the pistons 15 by Way of the Connecting rod 1G, the pistons 15 sliding in the respective cylinders 3. A i

Considering the right hand cylinder .in Figure 3 of the drawings, it may be stated that `when the corresponding piston 15 moves to the left, liquid is sucked through the inlet 6 and the inlet manifold 5, the valve 11 at the right hand end of Figure 3 opening to permit theliquid to pass into the corresponding Chamber 9, the liquid moving into the Cylinder 3 through the port 10. When, hovvever, the righthandpiston 15, in Figure 3, moves to the right, the valve 11 Closes, and the valve 1Q thereabove opens. Then the piston 15 forces the liquid `out through the port 10, the chamber 9, the manifold l?, and the outlet 8.

Some liquid must neeessarily pass through into the .compartment 1, past4 the pistons 15, or, considered from a different view point, the manufacturer may not care to attempt to give the pistons 15 anexeeedingly tight fit in the `cylinders 3. ln feither event, Waterl will accumulate in the compartment Il. l/Vhen the pistons 15 reciprocate, a small quantity of Wat-er Will be sucked through the conduits 82, from the compartment l into the inlet manifold 5. The pump, thus, will be `ltept primed. When thellevelof the water in the compartment /lfalls sufiioientlv, the float-operated valve 34: Will rest on the seat 33, and there will he no flow of useless substance through the conduits 32.

What is claimed is p A pump comprising spaced cylinders and a compartment connecting theoylinders, anV

`means for Joining the: pistons together, f mechanism assembled With one of said oon-.

neeted elements for Vreciprocating the pietons, a priming conduit establishing ,cont

munioating between theV eompartinein'l and the inlet `manifold, and `a float-operated valve Controlling the flow through the eon duit and responsive tofchangesl `of liquid Y level in theiinpartrnent.V

r`ln'testimony that I claim the foregoing as my ovvn, I have hereto affixed my signature. 1 't ARNOLD BoHNnNBLUsT; e 

